Home / 21,154.24-31,731.60-8,671.06

Finding the Fourth Proportional to 21,154.24, 31,731.60 and 8,671.06

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Solution

The fourth proportional to 21,154.24, 31,731.60 and 8,671.06 is: 13,006.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.24 : 31,731.60 = 8,671.06 : x
  2. Step 2: Convert to fraction form
    21,154.24/31,731.60 = 8,671.06/x
  3. Step 3: Cross multiply
    21,154.24x = 31,731.60 × 8,671.06
  4. Step 4: Simplify right side
    21,154.24x = 275,146,607.50
  5. Step 5: Solve for x
    x = 275,146,607.50/21,154.24
  6. Step 6: Final answer
    x = 13,006.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.